1420255017 has 6 divisors (see below), whose sum is σ = 2051479482. Its totient is φ = 946836672.

The previous prime is 1420254973. The next prime is 1420255043. The reversal of 1420255017 is 7105520241.

It can be written as a sum of positive squares in only one way, i.e., 771228441 + 649026576 = 27771^2 + 25476^2 .

It is not a de Polignac number, because 1420255017 - 2⁷ = 1420254889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1420255087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 78903048 + ... + 78903065.

It is an arithmetic number, because the mean of its divisors is an integer number (341913247).

Almost surely, 2^1420255017 is an apocalyptic number.

It is an amenable number.

1420255017 is a deficient number, since it is larger than the sum of its proper divisors (631224465).

1420255017 is a wasteful number, since it uses less digits than its factorization.

1420255017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157806119 (or 157806116 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 1420255017 is about 37686.2709351827. The cubic root of 1420255017 is about 1124.0581462154.

Adding to 1420255017 its reverse (7105520241), we get a palindrome (8525775258).

The spelling of 1420255017 in words is "one billion, four hundred twenty million, two hundred fifty-five thousand, seventeen".